You can keep guessing over and over again. It is a 4 digit number.
Changelogs: 31/12/23: It finally works! 28/12/23: Shared,but it doesn't work yet. Credits: New UI belongs to @programman Idea from guess the pin website Notes and FAQ: “Why isn’t it working for me?” It may not work because you may be a New Scratcher. Make sure you are a Scratcher before using this project as it uses cloud variables. “Isn’t it called a PIN Number?” No, because it would become Personal Identification Number Number and would make you guilty of RAS[Redundant Acronym Syndrome]. NOTE: ADVERTISEMENTS WILL BE DELETED.